So what's the real deal with fatigue once treatment finishes

I finished chemo and radiation last July, I also have the same experience with fatigue others have written here so eloquently.  Fortunately I am retired so don't have to work.  But I don't want to travel.  One small outing a day is quite enough for me.  So it is limiting my life.  And is so boring.  I read recently someone saying we need to report our tiredness to our oncologists, because currently they underestimate how many of us have ongoing fatigue.  Good luck to everyone Karen